3646472146829 has 4 divisors (see below), whose sum is σ = 3654382065180. Its totient is φ = 3638562228480.

The previous prime is 3646472146817. The next prime is 3646472146831. The reversal of 3646472146829 is 9286412746463.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 640056001225 + 3006416145604 = 800035^2 + 1733902^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3646472146829 is a prime.

It is a super-2 number, since 2×3646472146829² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3646472116829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3954958484 + ... + 3954959405.

It is an arithmetic number, because the mean of its divisors is an integer number (913595516295).

Almost surely, 2^{3646472146829} is an apocalyptic number.

It is an amenable number.

3646472146829 is a deficient number, since it is larger than the sum of its proper divisors (7909918351).

3646472146829 is an equidigital number, since it uses as much as digits as its factorization.

3646472146829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7909918350.

The product of its digits is 83607552, while the sum is 62.

The spelling of 3646472146829 in words is "three trillion, six hundred forty-six billion, four hundred seventy-two million, one hundred forty-six thousand, eight hundred twenty-nine".